What is the main function of the corpus callosum?

The corpus callosum is a crucial structure in the brain that serves as a thick band of nerve fibers connecting the right and left hemispheres. Its main function is to facilitate communication and coordination between the two hemispheres, allowing for the integration of cognitive and sensory information. This interhemispheric communication is essential for a wide range of functions, including problem-solving, language, and motor control. Each hemisphere of the brain has specialized functions, and the corpus callosum ensures that they can work together effectively.

In this context, the other options do not accurately describe the main role of the corpus callosum. Hormone regulation is primarily the responsibility of the endocrine system, visual processing is mainly handled by the occipital lobe, and emotional responses are largely mediated by the limbic system. Thus, the option highlighting the role of the corpus callosum in connecting the two hemispheres is the most accurate representation of its primary function.